Low-viscosity nitrile resin monomer, copolymer, cured material and preparation method thereof

Abstract

A low-viscosity nitrile resin monomer, a polymer and a preparation method thereof belong to the technical field of organic polymer materials. The low-viscosity nitrile resin monomer is a 4-nonyl phenoxyl-1,2-phthalonitrile resin monomer, and the nitrile resin cured material is a product obtained by heating polymerization of the nitrile resin monomer and benzoxazine-containing nitrile resin monomers. The nitrile resin monomer has good fluidity at low temperature, and is applicable to viscosity modification of general thermosetting resin. Melt blending of the nitrile resin monomer and the benzoxazine-containing nitrile resin is performed to prepare 4-nonyl phenoxyl-1,2-phthalonitrile / benzoxazine-containing nitrile resin copolymer and cured materials. The obtained 4-nonyl phenoxyl-1,2-phthalonitrile / benzoxazine-containing nitrile resin copolymer has low melting viscosity and processing temperature, and is well applicable to composite material preparation by RTM technology. The 4-nonyl phenoxyl-1,2-phthalonitrile / benzoxazine-containing nitrile resin cured material has good curing performance such as self-flame resistance, adhesion performance, heat stability, and the like, and is applicable to fields of paint, bonding agents, electronic packaging materials, aviation, aerospace, ships and resin-based composite materials. The preparation method is simple, easy to control, low in reaction temperature, energy-saving, and suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of organic polymer materials, and relates to 4-nonylphenoxy-1,2-phthalonitrile resin monomer and 4-nonylphenoxy-1,2-phthalonitrile resin Monomer / benzoxazine-containing bis-phthalonitrile copolymer, cured product and preparation method thereof. Background technique [0002] In recent years, polymer composite materials have been widely used in aerospace machinery and ships, and resin transfer molding technology (RTM) has been widely used in laboratories and industrial production because of its high efficiency and low cost. use. However, because RTM technology has strict requirements on resin melt viscosity and fluidity, most thermosetting resins cannot meet the requirements of this processing technology. Although unsaturated polyesters, vinyl esters, and acrylates can meet the requirements of low viscosity (<1.0Pa.s) and long-term storage at injection temperature, these resins cannot meet the requirements...

AI Technical Summary

Problems solved by technology

The low-viscosity resin currently used is epoxy resin, but due to the poor heat resistance of epoxy resin itself, it will seriously affect the performance of the resin system. Therefore, our laboratory has developed a low-viscosity nitrile-based resin. , reduce the viscosity of the system on the basis of ensuring the heat resistance of the system

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